Home / 2,846.12-3,942.84-2,778.08

Finding the Fourth Proportional to 2,846.12, 3,942.84 and 2,778.08

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Solution

The fourth proportional to 2,846.12, 3,942.84 and 2,778.08 is: 3,848.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,846.12 : 3,942.84 = 2,778.08 : x
  2. Step 2: Convert to fraction form
    2,846.12/3,942.84 = 2,778.08/x
  3. Step 3: Cross multiply
    2,846.12x = 3,942.84 × 2,778.08
  4. Step 4: Simplify right side
    2,846.12x = 10,953,524.95
  5. Step 5: Solve for x
    x = 10,953,524.95/2,846.12
  6. Step 6: Final answer
    x = 3,848.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.